cityjson / cityjson-qgis-plugin

A QGIS plugin that adds support for CityJSON files
Apache License 2.0
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Extracting only semantic roof surfaces for QGIS #48

Closed misonishiki closed 2 years ago

misonishiki commented 2 years ago

Hi guys!

I'm using LoD2.2 data on QGIS from the 3DBag (Tile 3693). Goal: Isolate roof surface polygons to calculate surface area and slope (using QGIS). However, when I select only roof surfaces in QGIS, it is incomplete, as you can see (selected roof surfaces are coloured as highlighter yellow). I'm not sure why this is the case... was wondering what you folks think.

Screenshot 2022-06-15 at 07 36 51

I have two options at this point in time: (1) Complete roof surfaces should/must be available on cityJSON...so I would have to extract directly from the CityJSON model using cjio?...I've followed the tutorial on cjio but I must admit, this does NOT come naturally to me. (2) This is normal. CityJSON isn't perfect, fill in the other roof surfaces manually on QGIS

HELP HELP HELP

HELP <3